Interlocking shaft construction



1932 A. KINDELMANN ET AL INTERLOCKING SHAFT CONSTRUCTION Filed Jan. 6,1931 3 Sheets-Sheet 1 INVENTOR .r

Oct. 25, 1932. A. KINDELMANN ET AL INTERLOCKING SHAFT CONSTRUCTION FiledJan. 6, 1931 3 Sheets-Sheet 2 INVENTOR 6' 5/620 AMdr/rmmn. BY War/afiutcffny. My ATTORNEYJ' Oct. 25, 1932. A. KINDELMANN ETiAL 1,884,734

INTERLOCKING SHAFT CONSTRUCTION Filed Jan. 6, 1931 3 Sheets-Sheet 3ATTORN EYJ' Patented Oct. 25, 1932 UNITED STATES PATENT OFFICE ALBERTKINDELMANN, F FLORAL PARK, AND EWALD BOECKING, OF BROOKLYN, NEW YORK,ASSIGNORS TO INTERNATIONAL PROJECTOR CORPORATION, OF NEW YORK,

N. Y., A CORPORATION OF DELAWARE INTERLOCKING SHAFT CONSTRUCTIONApplication filed January 6, 1931.

This invention relates to a simple and efficient means whereby a framingshaft in a motion picture apparatus may be operated either from withinthe casing when the door is open or from outside the casing when thedoor is closed.

A main object of the invention is to provide an automaticallyestablished connection between the main shaft within the easing and anauxiliary shaft mounted on the door, so that when the door is closedthis connection is established and the main shaft can be driven orturned by operating the auxiliary shaft from outside the door.

A further object provides simple and efficient means whereby thisconnection can be effected through the use of simple, inexpensive,durable elements, not complicated in construction and arrangement.

A further object is to provide a connection which can be automaticallyestablished when the door is closed, substantially regardless of theangular position, when the door is closed, of the auxiliary shaftthereon.

Further and more specific objects, features and advantages will moreclearly appear from a consideration of the specification hereinaftertaken in connection with the accompanying drawings which form part ofthe specification and will illustrate a present preferred form of theinvention.

Briefly and generally considered the inven tion includes a main shaftwithin a casing, part of which casing comprises a pivoted door whichsometimes is swung open, in order that the shaft within the casing canbe operated, when desired, without opening the door. An auxiliary shaftis mounted on the door and provided with suitably manually operablemeans to turn it. The auxiliary shaft extends within the casing and onits end is provided with means for engaging with the main shaft withinthe casing. This engaging means automatically engaging, as the doorcloses, substantially regardless of the angular position of theauxiliary shaft and the door as it is closed.

A preferred form of engaging means comprises projecting pins on oneshaft and corresponding receiving holes or recesses on the Serial No.506,906.

other. Preferably the pins are on the end of the auxiliary shaft and theholes are disposed on the operating knob on the end of the main shaftwithin the casing.

The present preferred form of the invention is illustrated in thedrawings, of which:

Fig. 1 is a side elevation with certain portions broken away, of theframing handle and shaft construction;

Fig. 2 is a vertical longitudinal section through the construction shownin Fig. 1;

Fig. 3 is a similar section through the right hand end of theconstruction showing an attachable portion of the shaft in theinoperative position;

Fig. 4 is a transverse section taken on line fl. 4: of Fig. 2;

Fig. 5 is a similar section taken on line 55 of Fig. 2;

Fi 6 is a similar section taken on the line 66 of Fig. 2; and

Fig. 7 is a similar section taken on line 77 of Fig. 2.

As shown in the drawings, the framing shaft construction with theunlocking handle is adapted for use on motion picture apparatus,especially projectors wherein it is desirable to be able to operate theshaft from either side of the machine which has the usual door, to beable to operate the shaft when the door is closed, as well as when it isopen. With this main idea in View the construction involves a casingindicated by walls 10 and 11 with a side door wall 12 of a side door.Within the casing is disposed the usual oil box 13 containing theintermittent mechanism, whereby the film is intermittently advancedthrough the machine. This box in framing the film as well known in theart is adapted to be rotated the desired amount and to that end isprovided with peripheral teeth 14 engaging with teeth on a gear 15. Thisgear is attached to or is formed integral with a sleeve 16, slidable onshaft 17 which is the main framing shaft. This shaft extends fromoutside the wall 10 through the Wall or partition 11 to a point adjacentthe inner face of door 12. A spring 18 bears against the face of thegear 15 at one end and against a lug 19 at the other end, said lug beingkeyed or otherwise fastened to the shaft 17. The opposite face of thegear has a clutch disk fastened thereto by means of screws 21. Thisclutch disk having teeth 22 engageable with corresponding teeth 23 on afixed clutch disk or plate 24 fastened by screws 25 to a plate 26 whichin turn is fastened by screws 27 to the wall or partition 11. Theseclutch disks have central bores through which the sleeve 16 and shaft 17extend.

The plate 26 is provided with a sleeve-like outwardly threaded extension27 also adapted to receive and act as a bearing for shaft 17 A. cup 28is threaded into the end of this portion 27 and packing 29 is disposedtherein. This packing may be oily material to properly lubricate thebearings. The end of the sleeve 16 toward the plate 26 is provided witha transverse notch 30 and a transverse pin 31 on the shaft 17 is adaptedto lie in said notch. This engagement permits the shaft 17 when turnedto turn the sleeve 16 and consequently the gear 15. This engagement alsopermits the shaft 17 as it starts to turn as in Fig. 2, to withdraw theclutch disks from engagement so that the gear 15 can be turned;Therefore, the initial movement of the shaft as it is turned willdisengage the clutch member by the action between the pin and the shaft17 riding part way up the bevelled side of the notch 30. After theclutch members are disengaged furtherturning of the shaft will turn thegear 15 to effect the framing adjustment.

The right-hand end of shaft 17 is provided with a cup-like end knob 32fastened thereto by screw 33. Within the bottom of the cup portion ofthis knob 32 are provided a series of holes 34 preferably arranged in acircle. Fastened by screw 35 to door wall 12 is a plate 36 having asleeve 37 thereon extending through a bore 38 in the door. This sleeveacts as a journal for an auxiliary shaft 39. the outer end. of which isprovided with an end knob 40 outside the door, on the inner end of whichis provided a plate 41 having outwardly extending pins 42 thereon whichare adapted to extend into the holes 34 abovementioned. When the door isopen, as shown in Fig. 3, the pins are withdrawn from the holes, but inthis case the end knob 32 within the casing can be operated to move theshaft 17. When the door is closed the pins 42 enter the holes 34 thuspermitting the turning of knob 43 from outside the door to operate theshaft 17. In this manner, therefore, the framing shaft can be operatedwhether the door is open or closed, and the proper connection foroperating it from without the casing is automatically made as the dooris closed.

The left end of shaft 17 is journalled in a hub 43 on wall or portion 10and is provided with a suitable packing material 44 held in place byplate 45. The end knob 46 is disposed on this end of shaft 17. This knobis provided with a slot 47 to receive a screw 48 fastened to the shaft17. This end of the shaft has on it a nut 49 between the inner shoulderof which and the adjacent face of the knob 46 is disposed a spring 50.Between the end face of the knob 46 and the plate is disposed a washer51. Adjacent the inner end of hub 43 there is disposed a collar 52fastened to shaft 17 by a pin 53.

In the operation of the device it will be as sum-ed that the parts arein the posit-ion shown in Fig. 2, with the door 12 closed. In

this position the two clutch disks 20 and are engaged and, therefore,the gear 15 can not be turned by turning the shaft 17. If it is desiredto operate the shaft 17 from out side the door 12, when the'door isclosed then the knob 40 is turned the desired amount.

With'the door closed the pins 42 engage in the holes 34 and turning ofknob 40 is thereby effective to turn the shaft 17. As shaft 17 starts toturn the pin 31 will coact with the bevelled sleeves of the notch 30 andslide the sleeve 16 to the left against the action of the spring anddisengage the clutch, further movement of the shaft will turn the gear15. After the desired movement for framing is achieved, the hand of theoperator is taken off the shaft, this will permit the spring 18 to movethe sleeve and clutch member into engagement and restore the normalcooperative relation between the pin 31 and the notch 30.

If it is desired to open the door 12 it is swung open as shown in Fig.3, and operation of shaft 17, when the door is open is effected in asimilar manner, by turning the knob 32, whereupon the action takesplace.

If it is desired to operate the same from the left-hand side of theprojector casing from outside the partition 10, then the knob 46 isturned whereupon the action takes place as above described.

This device, therefore, permits a shaft to be operated from a pluralityof points by providing an auxiliary section or shaft which can be movedto interlocking position with the'main shaft, when desired. The mainshaft and the auxiliary shaft are each provided with means for turningthem. The

main shaft, therefore, can be turned either directly from one or twopoints, or can be turned through cooperation with the auxiliary shaftfrom an additional point. In the present preferred form operation of aframof several points, but is especially useful where the shaft is usedwithin a casing and should be operated from either within or without thesame. This action can take place whether the elements are pivoted ormounted longitudinally. The door on which the auxiliary shaft is mountedmay be pivoted as shown or may be otherwise mounted for directlongitudinal movement.

Vfhile the invention has been described in detail and with respect to apresent preferred form thereof, it is not to be limited to such detailsand forms since many changes and modifications may be made in theinvention without departing from the spirit and scope the invention inits broadest aspects. Hence it is desired to cover any and all forms andmooifications of the invention which may come within the language orscope of any one or more of the appended claims.

W hat is claimed, is:

1. In combination a shaft within a casing, a pivoted door on saidcasing, an auxiliary shaft mounted on and extending through said doorand means on said shafts adapted to interlock when the door is closed sothat the shaft within the casing; may be driven from outside the casingby turning the auxiliary shaft.

2. In combination a casing of a motion picture apparatus, a rotatableshaft disposed therein, means on either end of said shaft for turningit, one end of said shaft be ng disposed within the casing, the otherend disposed outside the casing, a pivoted door on said casing disposedwhen closed adj acent the end of the shaft within the casing, an.auxiliary shaft mounted on and extending through the door, means on saidauxiliary shaft outside the door for turning it, and means on theadjacent ends of the main and auxiliary shaft to interlock when the dooris closed to permit the main shaft to be turned by manipulating theouter end of the auxiliary shaft.

3. In combination a casing of a motion picture projector, a framingshaft disposed therein for rotation, one end of said framing; shaftdisposed within the casing, the other end disposed outside the casingand a knob on said latter end, a pivoted door on said casing disposedwhen closed adjacent the end of the framing shaft within the casing, anauxiliary shaft mounted on and extending through said door, a hand knobon the inner end of the main shaft, a hand knob on the outer end of theauxiliary shaft and means on the adjacent ends of said shafts adapted tointerlock when the door is closed to permit the operation of the framingshaft by the turning of the hand knob on the outer end of "the auxiliaryshaft.

4. In combination a casing, a shaft disposed therewithin, a pivoted dooron said casing, an auxiliary shaft mounted on and extending through saiddoor, and a series of cooperating pins and recesses on adjacent ends ofsaid shafts adapted to interlock when the door is closed to permit theone shaft to operate the other.

5. In combination a casing, a shaft disposed therewithin, a pivoted dooron said casing, an auxiliary shaft mounted on and extending through saiddoor, a series of spaced pins associated with the inner end of theauxiliary shaft, the adjacent end of the main shaft within the casinghaving associated therewith a series of spaced holes or recesses adaptedto receive said pins when the door is closed whereby the main shaft maybe operated by the auxiliary shaft.

In combination a casing, a rotatable shaft disposed transverselytherein, one end of the shaft disposed outside the casing, a hand knobthereon, the other end of the shaft disposed within the casing a handknob thereon, said latter hand knob having a plurality of spacedrecesses thereon, a pivoted door on the casing disposed when closedadjacent the inner end of said shaft, an auxiliary shaft mounted on andextending through said door, a hand knob on the outer end of said shaft,the hand knob on the inner end of the first mentioned shaft havingaplurality of recesses thereon, and a plurality of spaced pins on theinner end of the auxiliary shaft to interlock the said recesses when thedoor is closed to permit the manipulat n of the shaft within the casingby the auxiliary shaft from Without the casing.

In testimony whereof we have hereunto set our hands.

ALBERT KINDELMANN. EIVALD BOECKING.

